seriousness of the situation, remembering of course that the faa has grounded the planes, listen to the ntsb's chairman who talks about how serious this incident now is. >> this is an unprecedented event. we are very concerned. as i mentioned in the beginning, we do not expect to see fire events onboard aircraft. this is a very serious air safety concern the faa has taken very serious action. >> reporter: and that, of course, feeds into how detailed and difficult it is going to be to actually put this problem right. they just don't know. >> richard, what are people saying there? do they think the dreamliner will be able to survive? >> reporter: i talked to one senior aviation official, international aviation official here. i asked exactly that question. yes is the short answer because we've seen it with the dc 10 and concord and other cases. what they have to do is find out what's wrong and put it right. the difficulty is the time and the expense in doing it. if it was a mature aircraft, that would be even a greater question. since it's a brand new plane with 800 orders still or 750 still to b